Improvement in grain-cleaning machines



J STERNBERG 2 Sheets-Sheet 1.

Grain Gleaner, No. 112,087. Patented Feb. 21, I871.

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NJETERS, PHOTO-LITHOGRAPHER. WASMNGTON. D Cv 2 Sheets-Sheet 2. J.STERNBERG.

7 Grain Cleaner.

No. 112,087. Patented Feb. 21, 1871.

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N. PETERS, PHOTO-LITHUGRAPHER. WASHINGTON. c c.

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JAY STERNBERG, or WEBSTER 'oITY, IOWA;

Letters Patent No. 112,087, dated February 21, 1871.

IMPROVEMENT IN GRAIN- CLEANING MACHINES.

The Schedule referred to in these Letters Patent and making part of thesame.

To all whom it may concern Be it known that I, JAY STERNBERG, of Web--ster City, in the county of Hamilton and State 0 Iowa, have invented anew andvaluable Improvement in Grain-cleaning Machines; and I do herebyde; clare that the following is a full, clear, and exact description ofthe construction and operation of the same, reference being had to theannexed drawing making a part of this specification and to the lettersand figures of reference marked thereon.

Figure 1 of the drawing is a representation of a vertical section of myapparatus Figure 2 an external view thereof; and

Figure 3 is a detail.

My invention relates to incansfor cleaning wheat and othergrains, andconsists in the novel construction and arrangement of'devices intendedto serve as an efficient apparatus by which the weight of the grain ismade to serve as a motor for separating it l'romchafi, straw, earth, andother impurities.

A of the drawing represents a frame, of which the posts B B form thevertical centers, one on each side, as shown.

O, G, and 0 represent rotating drums, with journals at each end, thathave their bearings, respect-- ively, in the central upright posts B.

I also attach a belt-pulley to each of these drums,

, as shown, and arrange supporting-standards for the journals, as shown.

The belt-pulleys are indicated by the letters D, and thesupporting-standards by E on the drawing.

Upon the periphery of each drum, 0, I arrange a series of buckets,marked a, which are constructed somewhat similar to the horizontalbuckets of an over-shot water-wheel; but I find it desirable to roundoil the extreme lower points thereof, so that small grain shall notlodge therein.

It is also desirable to place more of these buckets upon the upper drumthan upon those below it, to aid in carrying off the coarser impuritiesover the top of the side-box, and preventitii'om passing downward uponthe lower drums.

to guard against too great fall of grain upon the lower.

drums and regulate the speed thereof.

The letter G represents a sieve, placed in a diagonal position, asshown,- below the lower drum, and arranged for shaking or vibratingsidewise, by means of the shaft 12, cam r, and arm 8, as hereinaftermentioned.

The letter H represents a box, open at its top, bottom, and inner side,and adapted to fit up closely over one-side of the vertical drums, asshown.

The lower endof this box is rounded inward, and serves as a conductor ofthe grain from the lower drum upon the sieve.

The letter K represents a similar box to the one described above, exceptin the following particulars, namely:

'1 construct the top of box K in the shape of a hopper or funnel, andarrange below the mouth of such hopper a guide-plate, c, to conduct thegrain into the buckets of the upper drum, as shown.

I construct the bottom of box K with a rounded apron, m, to conduct thegrain to the sieve.

The letter P represents a fan, arranged in the frame, as shown, andadapted for blowing the grain as it passes into or upon the sieve.

A belt, U, is passed around the pulleys of the respective drums andfan-wheel, and operates the same simultaneously.

I find by experiment that the fan P may sometimes be omitted from themechanism without detracting from its efliciency.

My device is operated as follows, to wit:

The grain to be cleaned is passed into the. hopper of box K, from whichit passes down the guide-plate r and into the buckets of the upper drum.

The weight of the grain in said buckets causes the drum to rotate, andthe belt- U begins to operate the lower drums. The grain passes throughthe buckets of the several drums, (which buckets, by crossing the .belt'properly over its pulleys, are made to rotate to the right or left atwill,) and deposits it upon the sieve, when it is sifted and winnowed,or sifted alone, as may be desirable. v

s The cam upon the shaft a ma be placed at one end of the sieve, and thearm s adapted thereto without injury, and only one or two operatingdrums may be used profitably.

I claim as my invention 1. The combination of the drums G, havingbuckets a, asdescribed, the boxes H K, and cut-offs 0, substantially asspecified.

2. In combination with the drums C and operatingbelt, as described, theshaft a, cam r, and arm s, cousiructed and arranged to operatesubstantially as and for the purpose specified.

In testimony that I claim the above I. have here-.

Witnesses:

1). D. KANE, F. B. CURTIS.

